Here are five talking points from the weekend's Premier League action:
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Two goals in three minutes from Napoli's Goran Pandev were not enough to secure victory as his side threw away a two-goal lead to draw 3-3 at home to Udinese in an end-to-end Serie A thriller on Saturday.
News of all that's transpired on and off the football field
Gonzalo Higuain netted twice, the first a superb individual effort, to give Napoli a 4-2 win at Lazio while Fiorentina beat Hellas Verona 4-3 in a Serie A scoring spree on Monday.
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But such was Pep Guardiola's team's domination of the Premier League last season that reinforcements hardly seemed necessary and the solitary addition of Riyad Mahrez makes an already potent attack even more fearsome.
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Italian side Napoli has moved into second place in their Champions League Group F on Wednesday with a 3-2 win over French side Marseille at Sao Paolo.
Cristiano Ronaldo became the first player to score 400 goals in Europe's top five leagues as Juventus dropped points for the first time this season following a 1-1 Serie A draw with Genoa on Saturday. The Portuguese striker's fifth league goal for Juve carried him to the milestone, adding to his 84 strikes for Manchester United in the Premier League and 311 for Real Madrid in La Liga.
A round-up of Saturday's action in La Liga, Ligue 1 and Serie A.
Liverpool's Mohamed Salah is willing to put his Champions League ambitions on the back-burner to help the Merseyside club claim their first English league crown in 29 years, the Egyptian forward has said.
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A summary of Tuesday's Group stage matches in the UEFA Champions League.
Chelsea's players must quickly adapt to new manager Maurizio Sarri's demands as the Italian looks to reshape the team for the new Premier League season
Mesut Ozil guided Arsenal to a 2-0 victory over Napoli while a late Cesc Fabregas header gave Barcelona a laboured 1-0 win at 10-man Celtic in the Champions League on Tuesday.
Arsenal manager Arsene Wenger has told his players to watch out for Napoli's quickfire counter-attacks when the two high-flying sides meet at the Emirates Stadium in Champions League Group F on Tuesday.
Maverick AC Milan forward Mario Balotelli has apologised for a sending-off against Napoli which earned him a three-match ban but claimed he was provoked.
AC Milan striker Mario Balotelli has been given a three-match ban for his sending-off at the end of Sunday's 2-1 home defeat by Napoli, the Italian league said in a statement on Monday.
Chelsea coach Maurizio Sarri wants to keep Belgian forward Eden Hazard at the Premier League club and improve him as a player.
"Chelsea Football Club and Antonio Conte have parted company," the London outfit said on their website.
News of all that's transpired on and off the football field
A round of Wednesday night's Champions League group stage matches.
The former Boca Juniors and Napoli player coached Argentina at the 2010 World Cup, where his team were beaten 4-0 by Germany at the quarter-final stage
News of all that's transpired on and off the football field
A restaurant in St Petersburg has struck a chord with the hordes of soccer fans in town for the World Cup by serving up pizzas featuring the faces of some of the tournament's biggest stars.
La Liga leaders Barcelona handed Real Madrid more hope in the title race as they drew 0-0 at Athletic Bilbao on Sunday, only avoiding defeat thanks to some outstanding saves by Marc-Andre ter Stegen.
The five-time world player of the year opened his account in the easiest possible fashion by tapping into an empty net from less than two metres in the 50th minute.
Spain international goalkeeper Pepe Reina has left Liverpool for a season-long loan at Serie A club Napoli, but said in an open letter to fans of the five-times European champions it was not his decision to leave Anfield.
Paris St Germain revived their Champions League campaign with a 2-1 win over Liverpool in Group C on Wednesday, leaving the English club's hopes of reaching the last 16 hanging in the balance.
Arsenal qualified for a 17th successive season with a nervy 1-0 win at home to Besiktas and Malmo made it for the first time with a 3-0 win over Salzburg, whose participation ended in the qualifiers for the ninth time in a row.
Napoli have agreed to buy Spain centre back Raul Albiol from Real Madrid, the Serie A club said on Sunday.
Juventus made light work of bitter rivals Inter Milan on Sunday, winning 3-1 to increase their Serie A lead to nine points after AS Roma were washed out and Napoli blundered to a 3-0 defeat at Atalanta.
Poland forward Robert Lewandowski will be faced with a defender ominously known as K2 when, at the age of 29, he finally makes his debut at the World Cup finals in Tuesday's Group H match against Senegal.
Photographic summary of the football matches played across Spain, Italy and France
Last season's runners-up Liverpool, big-spending French league champions Paris St Germain and Carlo Ancelotti's Napoli were thrown together in the pick of the groups while holders Real Madrid must face last season's semi-finalists AS Roma.
A round-up of Wednesday's night's UEFA Chmpions League matches.
Former Inter Milan, Liverpool and Chelsea manager Rafael Benitez will return to Italy to take charge of Serie A club Napoli.
Italy will even be back to four teams in the Champions League group stage this season -- although that is thanks to a controversial re-formulation of the competition by UEFA rather than a significant improvement in performances by Serie A clubs.
Valverde said he was concerned about the team's away form after they were comprehensively beaten 2-0 by promoted Granada